1701 - BEARINGS AND PADS FOR STRUCTURES
1700-2 d. PTFE/Elastomeric Sliding Bearings. Provide an elastomeric portion satisfying subsection 1701.2(c) .
Provide a sliding surface for the PTFE that is chromi um-nickel stainless steel sheet or plate that complies with ASTM A 240, UNS S316 00 or UNS S30400. Polish the surface to an 8 micro-inch RMS (#8 mirror) finish. Provide special bearing quality polytetrafluoroethyle ne (PTFE) unfilled sheets having a static loading coefficient of friction of not more th an 0.03 at a bearing pressure of 3.0 ksi or greater and a temperature of 68 F.
e.Steel Bearings . Face the bearing surfaces of the bearings as required by DIVISION 700 . When specified on the Contract Documents, provide structural steel that is hot dip galvanized in accordance with ASTM A 123. When specified on the Contract Documents, pain t the surfaces of the bearings as required by DIVISION 700.
f.Pot Bearings. Provide an elastomeric portion satisfying subsection 1701.2c. except that the nominal hardness will lie between 50 and 60 on the Shore A scale. Fabricate the pot and piston of structural steel that complies with AASHTO M 270 Grade 36, 50 or 70 as shown in the Contract Documents. Do not use weathering steel for any of these components. Pr ovide brass seal rings that comply with ASTM B 36 for rectangular cross- sections or Federal Specification QQB62 Composite 2 for circular cross-sections.
g.Disc Bearings. Provide PTFE and stainless steel materials satisfying subsection 1701.2d . Construct disc from polyether urethane with a Shore A Durometer hardness of 55 ± 10. Provide steel satisfying subsection 1701.2f . Do not use weathering steel for any of these components. Design and use materials consistent with limitations and criteria from AASHTO’s "L RFD Bridge Construction Specifications".
h.Speherical Bearings. Use woven PTFE material. Do not us e weathering steel for any of these components. Design and use materials consistent with limitations and criteria from AASHTO’s "LRFD Bridge Construction Specifications".
i.Anchor Bolts . Provide AASHTO M 314 Grade 36 or Gr ade 55 anchor bolts that comply with
Division 1600 — When specified on the Contract Documents, provide anchor bolts, nuts, and washers that have
been hot dip galvanized in accordance with ASTM F 2329. 1701.3 TEST METHODS As specified in the various AASHTO and AS TM standards cited in this specification. 1701.4 PREQUALIFICATION None required. 1701.5 BASIS OF ACCEPTANCE
a.Plain Elastomeric Pads . Receipt and approval of a Type D certification as specified in DIVISION 2600 .
b.Bearings (all types except Steel) Accepted on the basis of the following:
1.Receipt and approva l of a Type A certification as specified in DIVISION 2600 .
2.Receipt and approval of a certif ication from the bearing producer de scribing the results of a visual examination by QC personnel performed during the testing of AASHTO M 251, section 8.8.2. Reject bearings having cracks exceeding the criteria of section 8.8.2, having bulging that sugg est poor laminate bond, or bulging patterns that imply laminate placement doe s not meet the tolerance requirements of M 251, section 6. Include the following with the certification:
a.A statement certifying the bearings confor m to the design, material, and manufacturing requirements of this specification.
b.High resolution pictures of all four sides of the loaded bearing. Take the pictures from an angle and distance, using appropriate lighting, to clearly indicate the amount of bulging and bulging patterns. 1701 - BEARINGS AND PADS FOR STRUCTURES
1700-3 (c) A detailed description of any surface cracks
3.Visual inspection for condition and compliance with the shop drawings by the Field Engineer at the project site.
c.Steel Bearings . Accepted on the basis of the following: Receipt and approval of a Type A certification as specified in DIVISION 2600 for all steel components provided through this specification. Visual inspection for compliance with the shop drawings and fabrication requirements of SECTION 705 at either the point of production, at the bridge fabricator’s facility, or at the project site, as determined by the Field Engineer. 1702 - CALCIUM CHLORIDE
1700-4 Section 1702
CALCIUM CHLORIDE 1702.1 DESCRIPTION This specification covers calcium chloride to be added to bases or surfaces as a st abilizer or dust palliative. 1702.2 REQUIREMENTS
a.Provide calcium chloride that complies with AA SHTO M 144 with the exception that “Impurities Content” does not apply. Supply one of the types listed below:
1.Type S (Flake, pellet or granule)
a.Grade 1 (77% CaCl 2)
b.Grade 2 (90% CaCl 2)
2.Type L (Liquid)
b.Base the application rate used in the Contract Documents on Type S, Grade 2 calcium chloride. Increase the rate by 20% when using Grade 1. Calculate the application rate of Type L based on the concentration of the material supplied. 1702.3 TEST METHODS Sample and test according to the app licable provisions of AASHTO T 143. 1702.4 PREQUALIFICATION Not required. 1702.5 BASIS OF ACCEPTANCE
a.Receipt and approval of a Type D certification as specified in DIVISION 2600 . Include the concentration of CaCl 2 if certifying a Type L material.
b.Satisfactory performance in the field. 1703 - ELECTRIC LIGHTING AND TRAFFIC SIGNAL EQUIPMENT
1700-5 Section 1703
ELECTRIC LIGHTING AND TRA FFIC SIGNAL EQUIPMENT 1703.1 DESCRIPTION This specification covers general materials, electrical conduit and mi scellaneous hardware for highway lighting and traffic signal sy stems. Construct these systems in accordan ce with, and at locations indicated in the Contract Documents or designated by the Engineer. 1703.2 REQUIREMENTS
a.General Materials . Whether the installation involves a single Contract or tied contracts, use a single manufacturer when purchasing all major items of electrical equipment to be used on the project(s). Make all attempts to maintain the same type an d consistency of products to promote uniformity, singular responsibility and serviceability. Provide equipment that is new, the best st andard product of a manufacturer regularly engaged in the production of this type of equipment, the manufacturer's latest approved design and of best quality and workmanship. Provide a complete lighting/traffic signal system. Provide and install all equipment necessary for the complete and satisfactory operation of the lighting/traffi c signal system whether specifically mentioned or not.
b.Electrical Conduit .
1.Metallic Conduit and Fittings. Provide a rigid steel conduit suitable for use as a raceway for wires or cables of an electrical system. Comply with all requir ements of American National Standards Institute (ANSI) C80.1. Protect the exterior surface with a metallic zinc coating and on the interi or surface with zinc, enamel or other equivalent corrosion resistant coating. Metallic conduit fittings are to be zinc coated and comply with ANSI C80.4.
2.Nonmetallic Conduit and Fittings.
a.Polyvinyl Chloride (PVC) Conduit. Provide a Schedule 40 or Schedule 80 rigid polyvinyl chloride conduit complying with the latest edition of the National Electrical Manufacturing Association (NEMA) Standard TC-2. Comply with NEMA Standard TC-3 on all PVC conduit fittings. Fabricate from polyvinyl chloride having the same chemical and physical properties as the conduit, which is made in accordance with the manufacturer’s recommendations. Underwriters, Inc. (UL) labels are re quired on all conduit and fittings.
b.Polyethylene Conduit. Provide a smooth wall, Schedule 40 or Schedule 80, high-density polyethylene duct complying with NEMA Standard TC-7.
3.Supply conduits complying with the dimensional requirements shown in the Contract Documents.
c.Miscellaneous Hardware . Hot dip galvanize or electroplate w ith zinc or cadmium all miscellaneous hardware such as bolts, nuts, washers, studs, pins, terminals, springs and similar fastenings in accordance with the following requirements: (1) Hot Dipped Galvanized. Comply with to requirements stated in ASTM A 153. Complying with the requirements stated under Class C or D for threaded fittings.
2.Electroplated Articles. Provide sufficient coating to complying with ASTM B 633. 1703.3 TEST METHODS For hot dipped galvanized materials, determine acceptable coating thickness as stated in ASTM A 90, ASTM B 499 or methods stated in ASTM B 633. For electroplated articles, measure thickness by any one of the methods specified in ASTM B 633 and, in addition, by eddy current techniques. The eddy current methods, ASTM B 244 may be utilized provided appropriate calibration procedures and standards have been applied. The ASTM B 659 provides a guide to these methods. The magnetic methods of ASTM B 499, referenced in ASTM B 633, and eddy current techniques are nondestructive and are preferred. 1703 - ELECTRIC LIGHTING AND TRAFFIC SIGNAL EQUIPMENT
1700-6 1703.4 Prequalification
a.Traffic Signals . Prequalification or preapproval by the Bureau of Traffic Engineering is required of all materials stated in the Contract Document’s Bill of Materials before use on KDOT projects. Upon approval by the Bureau of Traffic Engineering, the material will be adde d to the prequalified list of materials maintained by the Bureau of Construction and Materials. When a manufactur er or supplier is intending to supply traffic signal materials under these specifications, proceed as follows:
1.Submit an original catalog cut, shop drawing, drawing and/or data sheets on the material. (2) Send a signed certification lette r from the manufacturer or fabricat or certifying that the material complies with the applicable specifications. Submit this information to: KDOT Bureau of Transportation Safety and Technology Eisenhower State Office Building 700 SW Harrison Street Topeka, Kansas 66603-3754
b.Lighting. Not Applicable. 1703.5 BASIS OF ACCEPTANCE Acceptance of material provid ed under this specification will be based on the following:
a.Traffic Signals.
1.Prequalification for traffic si gnal materials as specified in subsection 1703.4 .
2.Traffic Signal Materials List: Before the installa tion of traffic signals, submit for the approval of the Engineer a complete list of traffic signal materials proposed for installation. Submit the list as soon as practicable. Include items on the list for all quantities which are indicated in the Bill of Materials. Include the make, model and other descriptive data as may be required by the Engine er to identify the product. Sign the list certifying that the project-provided materials fulfill the requirements above. The Engineer will compare the items on the traffic signal materials list to the prequalified list. If all of the items ma tch, the Engineer will sign the traffic signal materials list attesting that the materials are approved for use on the project. Forward a copy of the list to each of the following: Bureau Chief of Construction and Materials, Bureau Chief of Transportation Safety & Technology, and the maintaining agency’s contact person in dicated in the Contract Documents. In the event the Contractor wish es to provide any item that is not on the prequalified list, provide the Engineer with the information for prequalification per subsection 1703.4 . Forward this information to the Bureau of Transportation Safety & Technology for review and appr oval, along with possible addition to the prequalified list.
3.Electrical conduit: Receipt and approval of a Type D certification as specified in DIVISION 2600 and visual inspection for condition and compliance with dimensional or other requirements.
4.Structural steel poles and mast arms:
a.Receipt and approval of a copy of the certified mill test reports for each heat or lot of material showing process of manufacture and compliance with chemical and physical requirements of the applicable specifications. Submit thes e reports to the Engineer of Tests.
b.Satisfactory results of tests performed at de stination to determine the weight of the zinc coating.
c.Provide detailed shop drawings on all poles from the traffic signal pole manufacturer. Include drawings of the poles, mast arm and luminaire arm (on combination poles) dimensions, arm attachment details, handhole details, and anchor bolt details. Include the signal weight, projected areas and mounting arrangement the poles ar e designed to accommodate. Submit design calculations along with the shop drawings. Ap proved shop drawings will be included on the prequalified list. For traffic signal poles that are not covered by the approved manufacturer’s standard shop drawings, submit 3 copies of the detailed shop drawings, along with the design calculations to the Engineer for approval by the Bureau of Transportation Safety & Technology.
d.Along with the traffic signal materials list, submit the necessary traffic signal pole ordering information. The Engineer will review the information for compliance with the plan dimensions for pole height, mast arm length/mounting height and luminaire arm length/mounting height. 1703 - ELECTRIC LIGHTING AND TRAFFIC SIGNAL EQUIPMENT
1700-7 (e) Visual inspection at destination for condition, compliance with dimensions and requirements as
indicated by the ap proved documents.
5.Materials such as ferrous-and non -ferrous metals or other materials are governed by other sections of these specifications.
b.Lighting.
1.Electrical conduit: Receipt and approval of a Type D certification as specified in DIVISION 2600 and visual inspection for condition and compliance with dimensional or other requirements.
2.Structural steel poles and mast arms:
a.Receipt and approval of a copy of the certified mill test reports for each heat or lot of material showing process of manufacture and compliance with chemical and physical requirements of the applicable specifications. Submit thes e reports to the Engineer of Tests.
b.Satisfactory results of test performed at destination to determine the mass of the zinc coating.
c.Visual inspection at destination for condition and compliance with dimensions or other requirements.
3.Materials such as ferrous-and non -ferrous metals or other materials are governed by other sections of these specifications.
4.Materials for electric lighting installations not c overed elsewhere in these specifications are shown in the Contract Documents. Base acceptan ce of these material s on the following:
a.Approval of shop drawings, catalog cuts, brand names or other requirements as shown in the Contract Documents. Submit 7 copies of all catalog cuts, shop drawings, etc. to the following address for approval: KDOT Bureau of Transportation Safety and Technology Eisenhower State Office Building 700 SW Harrison Street Topeka, Kansas 66603-3754
b.Visual inspection at destination for condition and compliance with requirements as indicated by the approved documents. 1704 – WARNING LIGHTS
1700-8 Section 1704
WARNING LIGHTS 1704.1 DESCRIPTION This specification covers warning light s for use on traffic control devices. 1704.2 REQUIREMENTS
a.General . Provide warning lights of the type or types shown in the Contract Documents and complying with the latest edition of the MUTCD, Part VI, Warning Lights and the Institute of Transportation Engineers (ITE) Purchase Specification for Flashing and Steady Burn Warning Lights. Clearly mark the manufacturer’s name, type and model number on the outside of each unit used on the project. Provide lights that comply with th e crashworthy criteria contained in th e testing and acceptance guidelines of the National Cooperative Highway Research Program (NCHRP) Report 350.
b.Batteries . Use batteries that are recommended by the light manufacturer. Replace batteries when they no longer provide satisfactory performance as determined by the Engineer. 1704.3 TEST METHODS As specified in ITE Purchase Speci fication for Flashing and Steady Burn Warning Lights. Test lights as specified by NCHRP Report 350. 1704.4 PREQUALIFICATION Supply test data from an approved testing laborato ry for each type and model of warning light showing compliance with the specification. Submit test results, along with the brand, model and type of warning light to the Engineer of Tests. Requalify any unit that has been modified or changed in such a way as to affect the performance of the unit. Submit a NCHRP Report 350 crashw orthy certification to the Engineer of Tests. The Bureau of Construction and Materials will maintain a list of prequalified warning lights. 1704.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1704.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . Satisfactory performance in the field. 1705 – EPOXY-RESIN-BASE BO NDING SYSTEMS FOR CONCRETE
1700-9 Section 1705
EPOXY-RESIN-BASE BONDING SYSTEMS FOR CONCRETE 1705.1 DESCRIPTION This specification covers two-component, epoxy-resin bonding systems for application to portland cement concrete, which are able to cure under humid conditions and bond to damp surfaces, and comply with the AASHTO M 235 (ASTM C 881).
a.Seven types of systems are covered by this specification.
1.Type I - For use in non-load bearing applications for bonding hardened concrete to hardened concrete and other materials, and as a binder in epoxy mortars or epoxy concretes.
2.Type II - For use in non-load bearing applications for bonding freshly mixed concrete to hardened concrete. (3) Type III - For use in bonding skid-resistant materials to hardened concrete, and as a binder in epoxy mortars or epoxy concretes used on traffic bearing su rfaces (or surfaces subject to thermal or mechanical movements). (4) Type IV - For use in load bearing applications for bonding hardened concrete to hardened concrete and other materials, and as a binder for epoxy mortars and concrete.
5.Type V - For use in load bearing applications for bonding freshly mixed concrete to hardened concrete. (6) Type VI - For bonding and sealing segmental pre- cast elements with internal tendons and span-by-span erection when temporary post tensioning is applied.
7.Type VII - For use as a non-stress carrying sealer for segmental pre-cast el ements when temporary post tensioning is not applied as in span-by-span erection.
b.Three grades of systems are covered by this specification.
1.Grade 1 - Low viscosity (0-2.0 Pa)
2.Grade 2 - Medium viscosity (2.0-10 Pa)
3.Grade 3 - Non-sagging consistency.
c.Classes A, B, and C are defined for Types I through V, and Classes D, E, and F are defined for Types VI and VII, according to the range of temp eratures for which they are suitable. The temperature in question is usually that of the surface of the hardened conc rete to which the bonding system is to be applied. This temperature may be considerably different from that of the air. Where unusual curing rates are de sired, it is possible to use a class of bonding agent at a temperature other than that for which it is normally intended. For example, a Class A system will cure rapidly at room temperature. Any deviation of this sort must be approved by the Engineer before application. Classes are defined as follows: (1) Class A - For use below 40ºF. The lowest allowable temperature is defined by the manufacturer of the product.
2.Class B - For use between 40 and 60ºF. (3) Class C - For use above 60ºF. The highest allowa ble temperature is defined by the manufacturer of the product.
4.Class D - For use between 40 and 65ºF. (5) Class E - For use between 60 and 80ºF.
6.Class F - For use between 75 and 90ºF. 1705.2 REQUIREMENTS Provide material that complies with AASHTO M 235 (A STM C 881), is the type and grade specified in the Contract Documents, and is the class appropriate for the temperature at the time of use, as designated by the manufacturer. 1705.3 TEST METHODS As specified in AASHTO M 235 (ASTM C 881). 1705 – EPOXY-RESIN-BASE BO NDING SYSTEMS FOR CONCRETE
1700-10 1705.4 Prequalification
a.All epoxy resin systems intended for use under this specification must be prequalified on the basis of Type, Grade and Class prior to use. Manufacturers desiring to supply material for KDOT jobs must submit a written request to the Bureau Chief of Construction and Materials, with the following information for each type and brand name:
1.Name, address and telephone number of the manuf acturer. Include the name of the preferred contact person. (2) Brand name of the material.
3.Type, Grade and Class of the material.
4.Information regarding recommended usage and application instructions.
5.Material Safety Data Sheets.
6.One copy of a certified test report prepared by a laboratory regularly in spected by the Cement and Concrete Reference Laboratory (CCRL) of the National Institute of Standards Technology or other approved reference laboratory, showing test results complying w ith AASHTO M 235 (ASTM C 8 81). Include evidence that the laboratory is inspected regularly.
b.The information and test reports will be reviewed by the Bureau Chief of Construction and Materials. The manufacturer will be advised as to whether or not the product is prequalified.
c.The Bureau of Construction and Materials will main tain a list of prequalified epoxy resin systems. Products will remain prequalified as long as the formula tion and manufacturing processes remain unchanged, and field experience indicates that the ma terial functions appropriately. Changes in formulation or manufacturing processes will require new prequalification testing. Failure of the material to function appropriately in the field will be cause for removal of the product from prequalified st atus. Products removed from prequalified status will be considered for requalification if the manufacturer can provi de evidence that the cause of failure has been positively identified, and necessary formulation changes and quality control measures have been implemented to eliminate that cause. Complete prequalification testing may be required for products that have been removed from prequalified status. 1705.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1705.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . Observation of performance at the pr oject to verify that the epoxy is effective for the specified purpose. 1706 – ABUTMENT STRIP DRAIN
1700-11 Section 1706
ABUTMENT STRIP DRAIN 1706.1 DESCRIPTION The abutment strip drain is a prefabricated geocomposite system used to provide drainage behind abutment backwalls, wing walls, retaining walls or under slopes. 1706.2 REQUIREMENTS
a.General . The system is preformed using a lightweight, high impact polymeric core with an attached geotextile (filter fabric). The composite polymer core is bonded to the geotextile at intervals not exceeding 1 1/8 inch in any direction. The preformed system permits the flow of water through the core. The geotextile fabric is thermal (heat) bonded or fungicide glue bonded to the poly meric core. The composite product sheets or rolls have a minimum width of 3 feet with a minimum area of 40 square feet. Store and handle the system in accordance with manufacturer's recommendations, except that in no case may geotextile be exposed to direct sunlight, ultraviolet rays, temperature greater than 140ºF, mud, dirt, dust, and debris. Do not use any core section that becomes torn or punctured. All material delivered to the project must meet or exceed the physical requirements based on minimum average roll or sheet values in TABLE 1706-1 . TABLE 1706-1: COMPOSITE SYSTEM PROPERTIES Property Requirement Test Method Thickness (mils) 250 min., 500 max ASTM D 1777 Peel Strength (lbs/ft) 5 minimum ASTM D 1876 Transmissivity at hydraulic gradient of 1.0 and normal stress of 3,600 lbs / sq ft Wall Drain (gals/min/ft) 7 minimum ASTM D 4716 Slope Drain (gals/min/ft) 10 minimum ASTM D 4716
b.Core . The core is a lightweight polymer plastic co mposition of either poly styrene, polyethylene, polypropylene, or PVC, with a convexity structure and complies with TABLE 1706-2 . TABLE 1706-2: CORE PROPERTIES Property Requirement Test Method Std. Crush Strength: Wall Drain (lbs/sq ft) Min. 8,000 ASTM D 1621 Slope Drain (lbs/sq ft) Min. 17,000 ASTM D 1621 Deflections (%) Max. 20 ASTM D 1621 Thickness (mils) Min. 230 ASTM D 1777
c.Geotextile Filter Fabric . Provide fabric that complies with AASHTO M 288 for subsurface drainage geotextiles with properties for Class 2 geotextile with elonga tion greater than or equal to 50%, and percent in-situ soil passing the No. 200 siev e of greater than 50%. NOTE: Use backfill soils with a liquid limit less than 50. 1706.3 TEST METHODS Test the composite and individual components according to the standards cited in subsection 1706.2 . 1706 – ABUTMENT STRIP DRAIN
1700-12 1706.4 Prequalification
For prequalification, supply samples of the finished product from production to the KDOT Engineer of Tests for testing and evaluation. Submit separate samples of the core material and the filter fabric. All samples must be 10 feet long by nominal roll width. Submit a manufacturer’s or independent laboratory test report addressing the properties in subsection 1706.2 . When it becomes available, test results for th e product will be accepted from the AASHTO National Transportation Product Evaluation Program (NTPEP) without submitting samples. Forward an official copy of the test report to the Bureau Chief of Construction and Mate rials for evaluation. Prequalification will be based on satisfactory compliance of NTPEP results with this specification. If the KDOT test or NTPEP results comply with subsection 1706.2 , the name of the product will be placed on a list of prequalified products maintained by the Bureau of Construction and Materials. No geocomposite drainage system will be used on KDOT projects unless it has been prequalified. 1706.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1706.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . A visual inspection in the field for damage an d to verify compliance with these specifications. 1707 – MANHOLE STEPS
1700-13 Section 1707
MANHOLE STEPS 1707.1 DESCRIPTION This specification covers the requirements for steps for use in precast or cast in place manholes. The steps may be either Type 1 or Type 2 unless otherwise shown in the Contract Documents. 1707.2 REQUIREMENTS
a.Type 1 . Provide a manhole step made of a No. 3 or larg er deformed steel reinforcing bar encapsulated in a copolymer polypropylene plastic posse ssing good impact and load-bearing properties and corrosion resistance. Use a steel bar that complies with ASTM A 615 and make it continuous throughout the entire length of the legs and tread. Use a copolymer polypropylene plastic coating that complies with ASTM D 4101, Group 2.
b.Type 2 . All steps not complying with Type 1 are cons idered Type 2 and require prequalification. Provide steps that comply with ASTM C 478, Sections 13.4 and 13.6. Galvani ze ferrous metal steps, or encapsulate them in a plastic, which possesses good impact, load bearing, and corrosion resistant properties. 1707.3 TEST METHODS Test in accordance with the ASTM methods shown for each step type. 1707.4 PREQUALIFICATION Submit a sample and a certified test report, listing the results of all applicable tests, from a qualified laboratory, for each model and size of Type 2 step to be pr equalified to the Engineer of Tests. The Engineer of Tests will review the test results and inspect and/or test the sample, and will notify the manufacturer in writing of the status of each type of step submitted. The Bureau of Construction and Materials will main tain a list of prequalified Type 2 manhole steps. 1707.5 BASIS OF ACCEPTANCE
a.Type 1 manhole steps . Receipt and approval of a Type D certification as specified in DIVISION 2600 and visual inspection for conditions and dimensional requirements.
b.Type 2 manhole steps . Receipt and approval of a Type C certification as specified in DIVISION 2600 and visual inspection for conditions and dimensional requirements. 1708 – BRIDGE BACKWALL PROTECTION SYSTEM
1700-14 Section 1708
BRIDGE BACKWALL PR OTECTION SYSTEM 1708.1 DESCRIPTION This specification covers waterproofing protection systems to be applied to the face of a concrete abutment against which a backfill will be placed. Requirements fo r the systems other than the coal-tar membrane are performance oriented, and not limited to any si ngle methodology to accomplish the desired results. 1708.2 REQUIREMENTS
a.General . Make bridge backwall protection systems of permanent non-biodegradable materials possessing the waterproofing protection qualities outlined below. All materials incorporated into a system must be environmentally acceptable, and not prohib ited by any regulatory body. Handle , store and install bridge backwall protection systems in strict compliance with the manufacturer’s recommendations.
b.Properties.
1.The system provides an impermeable layer that adheres to the concrete surface. Such adherence may require the presence of water to activate the system. The activated system prevents lateral movement of water at the interface between the concrete and the impermeable layer.
2.The system is self healing when punctured by sharp objects. It has the capability to flex and bridge over, or move into and seal any cracks which may develop in the concrete.
3.Acceptable bentonite based systems contain a minimum of 9 lb of evenly distributed bentonite per square yard of system surface area. 1708.3 TEST METHODS None required. 1708.4 PREQUALIFICATION
a.Bridge backwall protection systems that are intended for use under this specification must be prequalified. Submit a written request to the Bureau Ch ief of Construction and Materials, with the following information for each type and brand name being offered:
1.Name, address and telephone number of the manuf acturer. Include the name of the preferred contact person.
2.Brand name of the system.
3.Complete technical information on the system, including test reports addressing requirements cited above. Include small sales samples of the system. Larger samples will be requested if further testing is necessary.
4.Information regarding recommended usage and application instructions. Specifically identify any concrete surface or system curing requirements. (5) Material Safety Data Sheets.
b.The information will be reviewed by the Bureau Chief of Construction and Materials, and the manufacturer will be advised as to whether or not the product is prequalified.
c.The Bureau of Construction and Materials will mainta in a list of prequalified bridge backwall protection systems. Products will remain prequalified as long as the formulation and manufacturing processes remain unchanged, and field experience indicates that the material functions appropriately. Changes in formulation or manufacturing processes will requir e a new prequalification review. 1708.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1708.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . Visual inspection at destination for condition and compliance with dimensional and other requirements. 1709 – SUBSTRUCTURE WA TERPROOFING MEMBRANE
1700-15 Section 1709
SUBSTRUCTURE WATERPROOFING MEMBRANE 1709.1 DESCRIPTION Material covered by this specification forms a waterp roofing system to be applie d to selected areas of a bridge substructure. 1709.2 REQUIREMENTS
a.General.
1.Provide a flexible coating wh ich is moisture insensitive, and wh ich seals the surface to which it is applied to prevent the penetration of water.
2.When applied to a concrete substrate and given 500 hours of exposure in an accelerated weathering apparatus (ASTM G 153, Table X1.1, Cycle 1) the waterproofing membrane system must be continuous, free of deep cracks and give complete protection from moisture intrusion.
3.Prepare surfaces and apply each component in accordance w ith the manufacturer's instructions. Provide a copy of the manufacturer's literature including mixing, thickness of application, and installation instructions to the Field Engineer prior to application of the system.
b.Epoxy Primer/Urethane Mastic System.
1.Primer. The primer is a two-part penetrating epoxy polyamide specially formulated for use on concrete surfaces to improve adhesion before ap plication of one or two-part polyuret hane coatings, with a minimum solids content of 20 percent.
2.Mastic. The mastic is a one or two-part modified urethane elastomer, formulat ed as a weather resistant membrane, with a minimum solids content of 80 percent.
c.Epoxy System. Epoxy systems comply with AASHTO M 235 (ASTM C 881) Type III, grade and class as required for work to be performed. Epoxy systems must be prequalified under SECTION 1705 , “Epoxy-Resin- Base Bonding Systems for Concrete.” 1709.3 TEST METHODS None specified. 1709.4 PREQUALIFICATION
a.All substructure waterproofing systems intended for use under this specification must be prequalified. Submit a written request to the Bureau Chief of Constructi on and Materials, with the following information for each type and brand name being offered: (1) Name, address and telephone number of the manuf acturer. Include the name of the preferred contact person.
2.Brand name of the system. (3) Complete technical information on the system, including test reports addressing requirements cited above. For epoxy systems, submit co mplete AASHTO M 235 (ASTM C 881) te st reports if the material has not already been prequalified under SECTION 1705 . Include small sales samples of the system. Larger samples will be requested if further testing is necessary.
4.Information regarding recommended usage and application instructions. Specifically identify any concrete surface or system curing requirements. (5) Material Safety Data Sheets.
b.The Bureau Chief of Construction and Materials will review the information, and the manufacturer will be advised as to whether or not the product is prequalified. 1709 – SUBSTRUCTURE WA TERPROOFING MEMBRANE
1700-16 c. The Bureau of Construction and Materials will mainta in a list of prequalified s ubstructure waterproofing
systems. Products will remain prequalified as long as the formulation and manufacturing processes remain unchanged, and field experience indicates that the material functions appropriately. Changes in formulation or manufacturing processes will requir e a new prequalification review. 1709.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1709.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . Visual inspection of performance in the field.
Source: Kansas Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 792–806 of 978.